a = int(input())
if 400<= a <= 599:
  print('8')
elif 600<= a <= 799:
  print('7')
elif 800<= a <= 999:
  print('6')
elif 1000<= a <= 1199:
  print('5')
elif 1200<= a <= 1399:
  print('4')
elif 1400<= a <= 1599:
  print('3')
elif 1600<= a <= 1799:
  print('2')
elif 1800<= a <= 1999:
  print('1') a = int(input()) a int(input()) int input() input if 400<= a <= 599:
  print('8')
elif 600<= a <= 799:
  print('7')
elif 800<= a <= 999:
  print('6')
elif 1000<= a <= 1199:
  print('5')
elif 1200<= a <= 1399:
  print('4')
elif 1400<= a <= 1599:
  print('3')
elif 1600<= a <= 1799:
  print('2')
elif 1800<= a <= 1999:
  print('1') 400<= a <= 599 400<= a 400 a 599 print('8') print '8' elif 600<= a <= 799:
  print('7') 600<= a <= 799 600<= a 600 a 799 print('7') print '7' elif 800<= a <= 999:
  print('6') 800<= a <= 999 800<= a 800 a 999 print('6') print '6' elif 1000<= a <= 1199:
  print('5') 1000<= a <= 1199 1000<= a 1000 a 1199 print('5') print '5' elif 1200<= a <= 1399:
  print('4') 1200<= a <= 1399 1200<= a 1200 a 1399 print('4') print '4' elif 1400<= a <= 1599:
  print('3') 1400<= a <= 1599 1400<= a 1400 a 1599 print('3') print '3' elif 1600<= a <= 1799:
  print('2') 1600<= a <= 1799 1600<= a 1600 a 1799 print('2') print '2' elif 1800<= a <= 1999:
  print('1') 1800<= a <= 1999 1800<= a 1800 a 1999 print('1') print '1' a = int(input()) int(input()) a
a = int(input())
if 400<= a <= 599:
  print('8')
elif 600<= a <= 799:
  print('7')
elif 800<= a <= 999:
  print('6')
elif 1000<= a <= 1199:
  print('5')
elif 1200<= a <= 1399:
  print('4')
elif 1400<= a <= 1599:
  print('3')
elif 1600<= a <= 1799:
  print('2')
elif 1800<= a <= 1999:
  print('1')
